A Join Index for XML Data Warehouses

Details A Join Index for XML Data Warehouses A Join Index for XML Data Warehouses

2008-09-11

arxiv.org/abs/0809.1981v1

Computer Science

Databases

2008 International Conference on Information Resources Management (Conf-IRM 08), Niagra Falls : Canada (2008)

Scientific paper

XML data warehouses form an interesting basis for decision-support applications that exploit complex data. However, native-XML database management systems (DBMSs) currently bear limited performances and it is necessary to research for ways to optimize them. In this paper, we propose a new join index that is specifically adapted to the multidimensional architecture of XML warehouses. It eliminates join operations while preserving the information contained in the original warehouse. A theoretical study and experimental results demonstrate the efficiency of our join index. They also show that native XML DBMSs can compete with XML-compatible, relational DBMSs when warehousing and analyzing XML data.

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